Three-horse equalizer.



No. 657,038. Patented Aug. 28, |900.

J. F. STEWARD. THREE HORSE EUUALIZEB.

(Application filed Mar. 2, 1900.) N o M o d el /Va 25mm.

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UNiTnn STATES PATENT OFFICE.'

JOHN F. STEWARD, OF CHICAGO, ILLINOIS.

THREE-HORSE EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 657,038, dated August 28, 1900. Application led March 2, 1900. Serial No.'7,093. (No model.)

To all w/Lom it may concern:

Be it known that I, JOHN F. STEWARD, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Three-Horse Equalizers, of which the following is a full description, reference being had to the accompanying drawings, in which- Figure l is a plan View of my equalizer as attached to the frame of a harvesting-machine, and Figs. 2, 3, 4, 5, and G are all details.

The object of my invention is to provide a simple equalizer for three horses; and its nature consists in details of construction of a well-known forni of equalizer in which a single bar is used as a tripletree.

In the drawings, A may be considered to be the main frame of a harvesting-machine, and B its main supporting-wheel.

a is a draw-iron to which the tongue attaches, and a a portion of the shoe to which the tongue-brace is attached.

C is the draft-tongue, shown cut away at two points in order to shorten it to the sheet.

c is the ton guebrace, constructed as shown in Fig. 2, so that at its front end one portion may lie above the tongue and another below it. Through these two portions and the tongue itself a bolt c passes. This brace is hooked into the portion a' of the shoe. This brace is forked, one portion passing below the tongue and the other over, so as to better resist any twisting ot' the tongue in its position, and thus counteract the tendency of the equalizer to droop under its own weight.

The whifletree D has its main support upon the outreaching arm E, which consists of the flat bar e and the brace-bar c. These being united at the outer end by the bolt c2 may be considered as one piece. The bolt last mentioned forms the pivot-bolt of the equalizer. The arm E is secured to the tongue by means of the bolt e3, which passes through the latter and also through the bars c and e'. In order that this arm E shall not be swung forward by the draft of the team, a brace F is provided, which extends from it, preferably from the pivot-bolt c2 to the tongue, to which it is secu red by the bolt c' or by some other means in asnitable position. I prefer to connect the brace F to the tonguebraoe c by means of the bolt c', as it thus makes the two braces practically as one piece and transmits a portion of the strain brought upon the equalizer direct to the point of attachment a'.

The tripletree D, the doubletree d, and singletrees d are of the ordinary kind. The tripletree is adapted to rock upon the bolt e2. The tree D is made as shown in Fig. 5. A sheet of metal cl2, preferably of the'length of the tree, is formed as shown in section in Fig. 5. Through this a series of rivets d3 passin order to prevent the sheet-lnetal bar thus formed from buckling. To make it still more substantial, a wooden bar d4 is placed within it, and the rivets d3 pass through all. Asl there is much strain upon the bolt @2, the metal of which D is formed would not prove durable. In order to avoid excessive wear, a U -shaped strap d5 extends over the forward edge of the tree, Iitting against same closely, and takes the bolt e2. In order to limit the movement of the tree D, one end of a cranked link G passes up through the tree, as shown in Fig. 4, and the other end passes downward through a slot in the left-hand end of thebar E, as shown in Fig. 6. On this downwardlyprojecting end is formed a head enough larger than the width of the slot to prevent its escape. If the other end of the tree D is moved far forward, the downward extension of the link G, where it passes through the bar c, reaches the limit of the slot e4, and fu rther movement is thus prevented.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a draft-equalizer in combination with a draft-tongue, the support E, the equalizerbar D and the stopping-link G pivotally connected to the bar at one end and to a fixed point at its other end, substantially as described.

2. A draft-equalizer consisting of a metal lie plate bent transversely into U shape in cross-seetiQn,a etere, the edgesof lthesaid bar secured by rivets, said rivets passing through the core, substantially as described.

3. In a draft-equalizer, the equalizer-bar D, the outreaehing arm E adapted to form a support for the same at its pivotal point, an arm extending beyond the other side ofthe drafttongue and provided with a slot e4, and the link G, al1 .eornbined, substantially as de- Io scribed.

JOHN F. STEVVARD.

Witnesses:

CHAS. N. CHAMBERS, J. A. GOLDsBOROUGH. 

